Wire-stitching machine



G. T. BUCKHAM AND1. l. NASIVHTH.

` WIRE STITCHING MACHINE.

APPLICATION FILED Nov. a. 1921.

Patented July 1l, 1922.

N w N nu E@ E! "lll atar GEORGE THOMAS BCKHAVI AND JOHN IRVING NASMITH, OF WESTMINSTER, LONDON,

ENGLAND, lSSGrNORSl TOV VICKERS LIMTED, OF WES'LlVEIl\TSTERyr LONDON; ENG- LAND.

WIRE-STITCHING MACHINE.

Specification of Letters Patent.

Patented July l1, i922.l

Applicatonwled November 3, 1921. Serial No, 512,629.

To @ZZ whom t may concern Be it known that we, GEORGE 'Enorme' BuoKH-AM and JOHN Irvine Nasnrrn, both subjects, of; the King ot Great Britain, residing at Wickers-` House, Broadway,A lVest; minster, in county ofi London,V lllngland` havey invented Certain new: and useful Improvements in; or Relating .to lVire-Stitcln ing Machines, of which the follow-ing is a specication-.-

This invention relates tol wire stitching machines and although of; general. application has. more particular reference to ma.- chines for stitchingy folding ,cardboard boXes or the like. In wire stitching: machines as at present in: use the clinching operation is usually performed either by the staple legsbeing driven by the stapling mechanism onto a lined plate whichl isso formed that it turns the staple Vlegs inwards and so clinches the same, or else moving clinchers are employed which are located@ in the bed plate or anvil ofthe machine, the moving clinchers being operated' by mechanism contained in the body of the anvil or bed plate and comprising some special attachment such as. a can-r or the like which co-operates with the driving mechanism of the machine. Machines of the last mentioned type possess the disadvantage that it is necessary to withdraw the box back over the anvil after the stitching' operation is completed;

According' tothe present invention the parts of a wire stitching machine are so constructed and' arranged' that the staples inserted in the boxes or the like are clinched by clinching dogs carried by an.. anvil or clincher box in such mannen that the usual mechanism located in the anvil lor actuating` the clinching'dogs is dispensed with, thereby permitting the boxes: or the like which are being stitched to be passed continuously over the anvil, thus. dispensing with the necessity of having to. withdraw the box back over the anvil or clincherbox after the stitching operation is completed.

In order that the said invention may be clearly understood and readily carried into effect the same willi now be described more lf'ull'y with reference to. accompanying drawings wh-ich show by way of example one embodiment oi.`4 a machine constructed according to the present invention and in which:-

igure l is a front elevation of the machine showing the former in its arrested position, the staples being'about tobe driven through the work.

Figures 2, 3 and l are sectional views of details, the sectionslbeing taken respectively ontheA linesZ-.Q 3&3 and 4-4 of Figure l, and

Figure 5 is` a side elevation of Figure l showing part of the rocking bar which is. pivotallymounted upon the arm of the machine and which carries the clinching bolt or? the stapling mechanism.

A, is the table orfwork support of the machine and B is an anvil or clincher box which is movable relatively to thev table A, the movable anvil B being provided with an extension ZJ which acts as a support for the work. C, C are the clinching dogs which are pivotally mounted by means of pins within a recess in the anvil and D is a light blade spring which is bent around one end of the anvil as shown and which bears upon the lower faces or the clinch-ing dogs C, C andA serves to retain the clinching dogs in their normal position to protect the bottom surface k2 of the box from being marked or damaged by the clinching dogs duri-ng the clinching operation andy also to resist the forces set up by the penetration olf the staple. E is the front plate or casing ol? the stapling mechanism which latter is positioned above the anvil B. The easing E contains a former F and' a driver C, the former F beingv capable of sliding movement within thel casing E while the driver Gr is mounted within the former F and is capable of. relative sliding movement therein. The former F is provided with a laterally projecting flange or bracketV which carries anadjustible stud f" the upper end of said stud acting as. a stop, as hereinafter eX- plained, and the lower end thereof heilig adapted to bear upon a spring controlled buil'er H which is mounted within a-'boX or casing H attached to the casing E. The driver Gr is also provided with a laterally projecting bracket g the said bracket g carrying an adjnstable stud gf' which as hereinafter explained', acts as a cli-nching bolt. The lower end of the clinching bolt g is normally positioned (as shown) labove the head of the stud 7. The buffer spring I-I is mounted around the stem of a bolt it the lower end of the latter being connected to a member I which is capable of sliding movement relatively to the casing E and which acts as a guide and a presser foot for the work. The member I is bifurcated at its lower end, the bifurcated parts z', c', being located respectively on either side of an extension e of the front plate E, the parts being held in place by a securing` plate e and stud e2. Connected to the lower end of the member I is a guide plate J forming part of the anvil B; the anvil is thus joined to the'buffer H by the sliding connection which is in turn supported by the buffer spring. As more clearly shown at Figure 2, the said guide plate J is provided with a downwardly inclined surface ,7' which receives one edge le of the box which is to be stapled and with a recessed part j which is upwardly inclined and which receives the other edge of the box, these inclined surfaces being so arranged that as the box is passed over the anvil the edges thereof 1overlap one another so as to form a lapY joint. The member I also carries a blade spring z' which bears upon the work. By attaching the anvil B to the buffer I-I through the intermediary of a sliding connection and also by supporting it by means of the leaf spring D, the anvil is prevented from twisting during the clinching operation.

In operation, the .two parts la, lo of the box which are to be stapled are passed over the two inclined surfaces y', y" so that they overlap one another, while the lower surface ,7a2 of the box rests upon the table A beneath the anvil B. In the operation of driving the staple L into the work the downward movement of the former F is arrested on reaching the surface of the box and prior to the driving of the staple through the work by the lower end-of the stud coming into contact with the spring controlled buffer H. The driver G thereupon continues its downward movement independently of the former F and drives the staple L through the work, the clinching dogs C, C during the drivingin movement remaining depressed against the resistance of the leaf spring D beneath the anvil so that they present a sloping surface to the legs of the staple L. The adjustment of the parts is such that when the lower surfaces of the driver G and the former F come into line or are on the same level the clinching bolt g carried by the driver G comes into contact with the head of the stud f thereafter the driver Gr and the former F as also the sliding connection I with its extension J, move down simultaneously and depress the anvil B on to the table A of the machine. The clinchers C, C 'are thereupon to, clinching dogs mounted wit-hin said anvil, stapling mechanism movable relatively to said anvil, the downward movement of said stapling mechanism being adapted to drive the staples through thework and by its continued downward movement to clinch the staples by depressing the anvil on to the work support.

2. A wire stitching machine comprising a work support,A stapling mechanism, ananvil or clinching box which is movable relatively to the work support and within which clinching dogs are pivotally mounted, the operation of clinching the staples being performed automatically during the downward movement of the stapling mechanism, and after the staples have been driven through the work by depressing the movable anvil into contactwith the work support.

3. A'wire stitching machine comprising stapling mechanism, an anvil which carries the clinching dogs, a work support positioned beneath said anvil, said anvil beingV spring controlled and being movable-rela- 1 tively to the work support, the downward movement of said stapling mechanism being adapted todrive the staples through the work and by its continued downward movement to clinch the staples by depressing the anvil on to the work support. V

4. A wire stitching mechanism for folding boxes comprising a work support, a movable anvil located above said work support and within which clinching dogs are pivotally mounted, the upper face of said anvil being adapted to receive the overlapping edges of the boxes which are to bestitched together, the lower surface of the box being positioned beneath said anvil and resting upon said work support, a blade spring being provided beneath Vthe clinching dogs so as to protect the lower surface of the box during the clinching operation.

v5. A wire stitching machine for folded boxes comprising stapling mechanism, a work support, a movable anvil located above said work support and within which the clinching dogs are pivotally mounted, the upper face of said anvil being adapted to receive the overlapping edges of the boxes which are to be stitched together, the lower surface of the box being positioned beneath said anvil and resting upon said work support, the stapling mechanism being adapted to drive the staples into the work by its downward movement, and by its continued downward movement to clinch the staples by pressing the anvil on to the work support.

6. A wire stitching machine for folded boxes comprising stapling mechanism, a work support, a movable anvil located above said work support and within which clinching dogs are pivotally mounted, the upper face of said anvil being adapted to receive the overlapping edges of the boxes which are to be stitched together, the lower surface of the box being positioned beneath said anvil and resting upon said work support, a blade spring being provided beneath the clinching dogs so as to protect the lower surface of the boX during the clinching operation, the stapling mechanism being adapted to drive the staples into the work by its downward movement, and by its continued downward movement to clinch the staples by pressing the anvil on to the work support.

GEORGE THOMAS BUCKHAM. JOHN IRVING NASMITH. 

